天然糖替代品Rebaudioside M:通过宿主工程,级联生物催化和基质养进行高效和成本效益的生物合成
Xiang Luo1, Yang Wang1, Man Zhou1
1School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
Food chemistry
|February 28, 2026
概括
酵素转化Rebaudioside D产生Rebaudioside M,一种零热量甜味剂. 主机工程和料批量策略显著提高了工业应用的生产效率和产量.
科学领域:
- 生物技术是生物技术.
- 酵素工程是什么? 酶工程是什么
- 代谢工程是代谢工程.
背景情况:
- 雷巴奥酸M是一种热门的零卡路里甜味剂.
- 低自然丰度的Rebaudioside M阻碍了工业使用.
研究的目的:
- 为了增强Rebaudioside M.的酶性生产.
- 克服当前生产方法的局限性.
主要方法:
- 改造了真核宿主以改善甘氨基转移酶的表达和活性.
- 实现了用糖合成酶的级联生物催化,用于在位糖供体再生.
- 利用食批量食策略来优化反应条件.
主要成果:
- 在真核宿主中达到92%可溶酶分数和1.46倍增加的特定活性.
- 增加产品标位至28.38gL-1与91.6%的转换使用养批量策略.
- 与批量模式相比,生产产量提高了3.99倍.
结论:
- 综合宿主工程,级联生物催化剂和料批量策略使Rebaudioside M.的高效生产成为可能.
- 这种方法为下一代天然甜味剂的经济高效制造提供了可行的途径.
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